Hi, I've used this program for a year or two on and off and I'm still trying to learn as much as I can. I've seen a few speedpaints using blackink where people start in greyscale and somehow make everything colorful. Have tried using lock transparency and such with low opacity brushes but it doesn't seem to work well. Any help is greatly appreciated.

BLENDING MODE : Multiply modeif you want to keep your strokes over and colorize easily under them it is possible to use the multiply mode.

1 - if you are in color mode normal you will have something opaque (Note: the darkness of your stroke will define the opacity)2 - but if you choose the multiply mode you'll be able to draw under your dark strokes easily

BLENDING MODE: Normal to Color mode

1 - You draw with grey value2 - and create a specific layer for color3 - Switch the blending "normal" into "color" mode4 - And set the opacity